/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM pagemap

#if !defined(_TRACE_PAGEMAP_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_PAGEMAP_H

#include <linux/tracepoint.h>
#include <linux/mm.h>

#define PAGEMAP_MAPPED          0x0001u
#define PAGEMAP_ANONYMOUS       0x0002u
#define PAGEMAP_FILE            0x0004u
#define PAGEMAP_SWAPCACHE       0x0008u
#define PAGEMAP_SWAPBACKED      0x0010u
#define PAGEMAP_MAPPEDDISK      0x0020u
#define PAGEMAP_BUFFERS         0x0040u

#define trace_pagemap_flags(folio) ( \
        (folio_test_anon(folio)         ? PAGEMAP_ANONYMOUS  : PAGEMAP_FILE) | \
        (folio_mapped(folio)            ? PAGEMAP_MAPPED     : 0) | \
        (folio_test_swapcache(folio)    ? PAGEMAP_SWAPCACHE  : 0) | \
        (folio_test_swapbacked(folio)   ? PAGEMAP_SWAPBACKED : 0) | \
        (folio_test_mappedtodisk(folio) ? PAGEMAP_MAPPEDDISK : 0) | \
        (folio_test_private(folio)      ? PAGEMAP_BUFFERS    : 0) \
        )

TRACE_EVENT(mm_lru_insertion,

        TP_PROTO(struct folio *folio),

        TP_ARGS(folio),

        TP_STRUCT__entry(
                __field(struct folio *, folio   )
                __field(unsigned long,  pfn     )
                __field(enum lru_list,  lru     )
                __field(unsigned long,  flags   )
        ),

        TP_fast_assign(
                __entry->folio  = folio;
                __entry->pfn    = folio_pfn(folio);
                __entry->lru    = folio_lru_list(folio);
                __entry->flags  = trace_pagemap_flags(folio);
        ),

        /* Flag format is based on page-types.c formatting for pagemap */
        TP_printk("folio=%p pfn=0x%lx lru=%d flags=%s%s%s%s%s%s",
                        __entry->folio,
                        __entry->pfn,
                        __entry->lru,
                        __entry->flags & PAGEMAP_MAPPED         ? "M" : " ",
                        __entry->flags & PAGEMAP_ANONYMOUS      ? "a" : "f",
                        __entry->flags & PAGEMAP_SWAPCACHE      ? "s" : " ",
                        __entry->flags & PAGEMAP_SWAPBACKED     ? "b" : " ",
                        __entry->flags & PAGEMAP_MAPPEDDISK     ? "d" : " ",
                        __entry->flags & PAGEMAP_BUFFERS        ? "B" : " ")
);

TRACE_EVENT(mm_lru_activate,

        TP_PROTO(struct folio *folio),

        TP_ARGS(folio),

        TP_STRUCT__entry(
                __field(struct folio *, folio   )
                __field(unsigned long,  pfn     )
        ),

        TP_fast_assign(
                __entry->folio  = folio;
                __entry->pfn    = folio_pfn(folio);
        ),

        TP_printk("folio=%p pfn=0x%lx", __entry->folio, __entry->pfn)
);

#endif /* _TRACE_PAGEMAP_H */

/* This part must be outside protection */
#include <trace/define_trace.h>